| SC 13G/A | 2007-10-10 | WELLINGTON MANAGEMENT CO LLP | SEMTECH CORP | 6,459,530 | 10.2% | EDGAR |
| SC 13G/A | 2007-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | SEMTECH CORP | 4,888,000 | 6.7% | EDGAR |
| SC 13G | 2007-02-14 | WELLINGTON MANAGEMENT CO LLP | SEMTECH CORP | 4,129,200 | 5.7% | EDGAR |
| SC 13G/A | 2007-02-12 | CAPITAL RESEARCH & MANAGEMENT CO | SEMTECH CORP | 5,800,000 | 8.0% | EDGAR |
| SC 13G | 2007-02-09 | TimesSquare Capital Management, LLC | SEMTECH CORP | 3,630,807 | 5.0% | EDGAR |
| SC 13G/A | 2007-02-05 | FRANKLIN RESOURCES INC | SEMTECH CORP | 1,089,135 | 1.5% | EDGAR |
| SC 13G/A | 2006-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | SEMTECH CORP | 7,392,100 | 10.1% | EDGAR |
| SC 13G/A | 2006-02-10 | WESTFIELD CAPITAL MANAGEMENT CO LLC | SEMTECH CORP | 0 | 0.0% | EDGAR |
| SC 13G/A | 2006-02-07 | FRANKLIN RESOURCES INC | SEMTECH CORP | 3,796,330 | 5.2% | EDGAR |
| SC 13G/A | 2006-01-10 | CAPITAL RESEARCH & MANAGEMENT CO | SEMTECH CORP | 7,350,000 | 10.1% | EDGAR |
| SC 13G/A | 2005-12-12 | PRICE T ROWE ASSOCIATES INC /MD/ | SEMTECH CORP | 7,394,600 | 10.0% | EDGAR |
| SC 13G/A | 2005-02-14 | FRANKLIN RESOURCES INC | SEMTECH CORP | 7,507,707 | 10.1% | EDGAR |
| SC 13G/A | 2005-02-14 | WESTFIELD CAPITAL MANAGEMENT CO LLC | SEMTECH CORP | 9 | 11.0% | EDGAR |
| SC 13G/A | 2005-02-11 | PRICE T ROWE ASSOCIATES INC /MD/ | SEMTECH CORP | 7,228,900 | 9.7% | EDGAR |
| SC 13G | 2004-07-27 | WESTFIELD CAPITAL MANAGEMENT CO LLC | SEMTECH CORP | 9 | 11.0% | EDGAR |
| SC 13G/A | 2004-02-13 | CAPITAL RESEARCH & MANAGEMENT CO | SEMTECH CORP | 1,525,000 | 2.1% | EDGAR |
| SC 13G/A | 2004-02-11 | PRICE T ROWE ASSOCIATES INC /MD/ | SEMTECH CORP | 7,125,000 | 9.6% | EDGAR |
| SC 13G/A | 2004-02-09 | FRANKLIN RESOURCES INC | SEMTECH CORP | 8,512,003 | 11.5% | EDGAR |
| SC 13G/A | 2003-08-11 | FMR CORP | SEMTECH CORP | 1,097,034 | 1.5% | EDGAR |
| SC 13G/A | 2003-02-13 | CAPITAL RESEARCH & MANAGEMENT CO | SEMTECH CORP | 5,135,030 | 6.9% | EDGAR |